This root form (lemma) is used in 4 different forms in the NT: ἄστρα (NNP), ἄστροις (DNP), ἄστρον (ANS), ἄστρων (GNP).
It is glossed in 2 different ways: ‘star’, ‘stars’.
OET LUKE 21:25 Greek word=ἄστροις (astrois) Morphology=DNP English gloss=‘stars’ SR GNT LUKE 21:25 word 10
OET ACTS 7:43 Greek word=ἄστρον (astron) Morphology=ANS English gloss=‘star’ SR GNT ACTS 7:43 word 9
OET ACTS 27:20 Greek word=ἄστρων (astrōn) Morphology=GNP English gloss=‘stars’ SR GNT ACTS 27:20 word 5
OET HEB 11:12 Greek word=ἄστρα (astra) Morphology=NNP English gloss=‘stars’ SR GNT HEB 11:12 word 12